pretty easy way, i don't use any myself, i don't like the idea of a few clicks and your sig is half made, where is the effort?
sorry but i dont reely like it id rather keep all my DLed brushes http://rapidshare.de/files/8248508/spiderm...ig_psd.zip.html
downloaded brushes are cool, but don't claim any of your sigs as your own work. same thing goes for downloaded c4d